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# AWS::ApplicationSignals::ServiceLevelObjective ExclusionWindow
<a name="aws-properties-applicationsignals-servicelevelobjective-exclusionwindow"></a>

The time window to be excluded from the SLO performance metrics.

## Syntax
<a name="aws-properties-applicationsignals-servicelevelobjective-exclusionwindow-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-applicationsignals-servicelevelobjective-exclusionwindow-syntax.json"></a>

```
{
  "[Reason](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-reason)" : String,
  "[RecurrenceRule](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-recurrencerule)" : RecurrenceRule,
  "[StartTime](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-starttime)" : String,
  "[Window](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-window)" : Window
}
```

### YAML
<a name="aws-properties-applicationsignals-servicelevelobjective-exclusionwindow-syntax.yaml"></a>

```
  [Reason](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-reason): String
  [RecurrenceRule](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-recurrencerule): 
    RecurrenceRule
  [StartTime](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-starttime): String
  [Window](#cfn-applicationsignals-servicelevelobjective-exclusionwindow-window): 
    Window
```

## Properties
<a name="aws-properties-applicationsignals-servicelevelobjective-exclusionwindow-properties"></a>

`Reason`  <a name="cfn-applicationsignals-servicelevelobjective-exclusionwindow-reason"></a>
The reason for the time exclusion windows. For example, maintenance.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `1024`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RecurrenceRule`  <a name="cfn-applicationsignals-servicelevelobjective-exclusionwindow-recurrencerule"></a>
The recurrence rule for the time exclusion window.  
*Required*: No  
*Type*: [RecurrenceRule](aws-properties-applicationsignals-servicelevelobjective-recurrencerule.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`StartTime`  <a name="cfn-applicationsignals-servicelevelobjective-exclusionwindow-starttime"></a>
The start time of the time exclusion window.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Window`  <a name="cfn-applicationsignals-servicelevelobjective-exclusionwindow-window"></a>
The time exclusion window.  
*Required*: Yes  
*Type*: [Window](aws-properties-applicationsignals-servicelevelobjective-window.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)